c-Fos induction by gut hormones and extracellular ATP in osteoblastic-like cell lines

Elda Leonor Pacheco-Pantoja, Jane P Dillon, Peter J M Wilson, William D Fraser, James A Gallagher

Research output: Contribution to journalArticle

7 Citations (Scopus)
5 Downloads (Pure)

Abstract

It is widely accepted that the c-Fos gene has a role in proliferation and differentiation of bone cells. ATP-induced c-Fos activation is relevant to bone homeostasis, because nucleotides that are present in the environment of bone cells can contribute to autocrine/paracrine signalling. Gut hormones have previously been shown to have an effect on bone metabolism. In this study, we used the osteoblastic Saos-2 cell line transfected with a c-Fos-driven reporter stimulated with five gut hormones: glucose inhibitory peptide (GIP), glucagon-like peptide-1 (GLP-1), glucagon-like peptide-2 (GLP-2), ghrelin and obestatin, in the presence or absence of ATP. In addition, TE-85 cells were used to determine the time course of c-Fos transcript induction following stimulation with GLP-1, and GLP-2 with or without ATP, using reverse transcription qPCR. The significant results from the experiments are as follows: higher level of c-Fos induction in presence of GIP, obestatin (p = 0.019 and p = 0.011 respectively), and GIP combined with ATP (p < 0.001) using the luciferase assay; GLP-1 and GLP-2 combined with ATP (p = 0.034 and p = 0.002, respectively) and GLP-2 alone (p < 0.001) using qPCR. In conclusion, three of the gut peptides induced c-Fos, providing a potential mechanism underlying the actions of these hormones in bone which can be directed or enhanced by the presence of ATP.

Original languageEnglish
Pages (from-to)647–651
JournalPurinergic Signalling
Volume12
Issue number4
Early online date20 Jul 2016
DOIs
Publication statusPublished - Dec 2016

Keywords

  • ATP
  • GIP
  • GLP-1
  • GLP-2
  • Osteoblasts
  • c-Fos

Cite this